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IASS 2016 Tokyo Symposium: Spatial Structures in the 21st Century


IASS Symposium 2016

SESSION: Timber Structures & Environmental Compatibility

Reinforcement of glulam with ab intio embedded steel sheets for high-performance joints

< Table of Contents for Timber Structures & Environmental Compatibility
  • Proceedings Name: IASS 2016 Tokyo Symposium: Spatial Structures in the 21st Century
  • ISSN: (Electronic Version) 2518-6582
  • Session: Timber Structures & Environmental Compatibility
  • Pages: 10
  • Title: Reinforcement of glulam with ab intio embedded steel sheets for high-performance joints
  • Author(s): Christoph Koj, Martin Trautz, Andrija Pranjic
  • Keywords: glulam, glued-in steel reinforcements, adhesive joint, steel sheet, timber connection
Abstract
In engineered timber construction glued connections are superior to mechanical fasteners, yielding a significantly higher strength and stiffness. The Chair of Structures and Structural Design at RWTH Aachen University in cooperation with the Institute of Building Materials Research (ibac) and three industrial partners is researching a way to embed steel sheets 'ab initio' that means within in the glulam production process. The embedded thin steel sheets serve as local reinforcements to boost the strength of bolt and steel plate connections and create high-performance joints. After the evaluation of suitable steel-glue-combinations, the effects of sheet geometry, climatic exposure, long term loads and installation methods have been examined. Additionally the glulam production process was analysed to determine suitable slots in the process to integrate the embedding of the steel sheets. Finally the developed connections are tested on construction-size tension and bending joints, proving the potential of this innovative reinforcement and joining method.

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